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adding DLOG to c28027 project

Rasit GOKALAN1
Intellectual 360 points

Hello,

I want to use DataLOG module in C28027 micro based project. For this feature,

- DLOG4CH-HVPM_eSensorless.h and DLOG4CHC.ASM files are added to project. And  initializations and calling are shown below are done in main .c file by taking referance HVPMSM_sensorless.

F2802x_Headers_nonBIOS.CMD file under the adress device support/ f2802x / v210 / f2802x_headres / cmd and f28027.CMD file under the adress device support/ f2802x / v210 / common/ cmd is used or the project.

After compiling project the warning "warning #10247-D: creating output section "DLOG" without a SECTIONS" is seen in the CCS editor.

And after running project and  then graph under the folder HVPM_Sensorless graph1.graphProp -  graph2.graphProp I cant see any variables on the graph. What can be the problem?

 

int16 DlogCh1 = 0;

int16 DlogCh2 = 0;

int16 DlogCh3 = 0;
int16 DlogCh4 = 0;

-DLOG_4CH dlog = DLOG_4CH_DEFAULTS;

// Initialize DATALOG module
dlog.iptr1 = &DlogCh1;
dlog.iptr2 = &DlogCh2;
dlog.iptr3 = &DlogCh3;
dlog.iptr4 = &DlogCh4;
dlog.trig_value = 0x1;
dlog.size = 0x00c8;
dlog.prescalar = 5;
dlog.init(&dlog);

DlogCh1 = (int16)_IQtoIQ15(svgen1.Ta);
DlogCh2 = (int16)_IQtoIQ15(svgen1.Tb);
DlogCh3 = (int16)_IQtoIQ15(svgen1.Tc);
DlogCh4 = (int16)_IQtoIQ15(svgen1.Tb-svgen1.Tc);

Regards,

  • 0
    Guru 13185 points

    Hello Rasit,

    Please try to add new section in your F28027.cmd file:

    SECTIONS
    {
        DLOG: > DRAML0,PAGE=1
    }

    Hope this helps.

    Best regards,

    Maria

  • 0 in reply to Maria Todorova
    Intellectual 360 points

    Hello Maria,

    Your recommendation solved the problem about placing DLOG buffer to RAM memory. The warning  "#10247-D: creating output section "DLOG" without a SECTIONS" is not seen anymore.

    In CMD file is written as given below for DLOG buffer.

    DRAML0      : origin = 0x008800, length = 0x000800     /* on-chip RAM block L0 */

    {
    DLOG: > DRAML0,PAGE=1
    }

    After compiling and running the program I check the dual time graph. But random signals magnitude of which is between -1 and 1is appeared in the graph. I was expecting rg1.out (sawtooth), and other duty values (svgen1.Ta, Tb) values while motor running. Graps settings is written below

    Acquisition Buffer Size: 200;

    Dsp data type: 16 bit signed integer

    Index Increment: 1

    Q Value: 15

    Sampling Rate Hz: 1

    Start Adress A : DLOG_4CH_buff1

     Start Adress B : DLOG_4CH_buff2

    Display Data Size: 200

    What can be problem?

    Regards,

    Raşit GÖKALAN

  • 0 in reply to Rasit GOKALAN1
    Guru 13185 points

    Hello Rasit,

    Did you put this line after assigning DlogCh1, DlogCh2, DlogCh3, DlogCh4 in your code?

    // ------------------------------------------------------------------------------
    //    Call the DATALOG update function.
    // ------------------------------------------------------------------------------
        dlog.update(&dlog);

    Best regards,

    Maria

  • 0 in reply to Maria Todorova
    Intellectual 360 points

    Maria,

    You are right. This solved problem. Graph seems as expected.

    Last question, Is it possible to see DualTimeA and DualTimeB graph on the same window?

    Raşit GÖKALAN 

  • 0 in reply to Rasit GOKALAN1
    Guru 13185 points

    Hello Rasit,

    That's good to hear.

    I am afraid that it is not possible to put the graphic together. But I am not sure.

    Maybe you can post this question to CCS forum. If they don't have this feature, maybe they will consider to make this option next time.

    Best regards,

    Maria